They're taking in minimum deposits of $200k selling in 3000 bitcoin blocks.
As they get through the first few millionaires they will have a lot of bitcoins left. Those that only deposit the minimum might be able to get 3000 coins for $200k.
That's less than $70 per coin. I'd sell $200k worth of bitcoin to get in on that deal.
Of course, there's a risk that you pull $200k worth of bitcoins out and pay the taxes on it only to not be able to buy 3000 bitcoins at the auction. You've just fucked yourself.
Read the rules again. They have the right to sell all, some, or none of the bitcoin. The $200k deposit is just to prevent people trolling. They are not obliged to sell at this price
And as this is an open auction, it is extremely unlikely that it will be sold vastly below the spot price. $600*30000=$18M is nothing for real whales